March 4 – Following the collapse of the American Association, the National League holds its first meeting. They decide to split 1892 into two halves, with the winners to meet in a championship series following the regular season.

July 15 – Play resumes for the second half of the season after a one-day break.[2][3]

July/August – After Boston cuts some players, it begins the second half slowly and Cleveland takes the lead. Some fans accuse the Boston club of purposely playing poorly "in order to force a playoff at the end of the season", i.e. to generate extra revenue.[Glory Fades Away, by Jerry Lansche, Taylor Publishing, 1991, p. 207]

October 17 – The first-half champion Boston Beaneaters and second-half champion Cleveland Spiders begin a five-game series to determine the overall championship. The first game, pitched by Jack Stivetts for the Beaneaters and Cy Young for the Spiders, ends in a 0–0 tie after 11 innings.

November 17 – National League magnates conclude a four-day meeting in Chicago where they agree to shorten the 1893 schedule to 132 games and drop the double championship concept. They also pledge to continue to reduce player salaries and other team expenses.

May 21 – Hub Collins, 28, second baseman for the 1889–90 champion Brooklyn teams who led league in doubles and runs once each

July 12 – Alexander Cartwright, 72, pioneer of the sport who formulated the first rules in 1845, developing a new sport for adults out of various existing playground games; established distance between bases at 90 feet, introduced concept of foul territory, set the number of players at nine per team, and fixed the number of outs at three per side and innings at nine; founded Knickerbocker Base Ball Club, the sport's first organized club, in New York City, and spread the sport across the nation into the 1850s.

October 5 – Dickie Flowers, 42?, shortstop for two seasons in the National Association, 1871–72.

November 3 – Edgar Smith, 30, played in four seasons with four teams from 1883 to 1885, and 1890.